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Mill 4™ - 90° SHOULDER MILLING TO THE EXTREME

The Mill 4 Series is specially engineered to achieve excellent surface quality and higher metal removal rates in shoulder milling applications. Its unique design allows you to apply the tool in multiple passes (step down) with outstanding results. From roughing to finishing operations, the Mill 4 series is applicable in a wide range of workpiece materials: steel, cast iron, stainless steel, non-ferrous materials, and high-temp alloys.

Double-sided strong insert with 4 cutting edges.

High positive geometry for lower cutting forces.

Superior wall and surface finish capabilities.

Comprehensive offering to cover all applications in all material groups.

 

Part of the First Choice Program.

Easy to select, easy to order, easy to apply, exceptional performance. Learn more about First Choice:

STEPLESS SOLUTIONS

A challenge with step down applications is that most tools leave tool marks with every pass they take, resulting in unsatisfactory or low quality wall finishes, which require another finishing pass at the very end of the process.

Applying Mill 4™ delivers pristine wall finishes, and eliminates that finishing pass with an additional tool. That saves you time and reduces your production cost.

Mill 4 vs. Others
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  • P Steel (244)
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      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (234)
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      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (234)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS
      (234)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS
      (234)
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      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS
      (234)
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      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS
      (244)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS
      (244)
  • M Stainless Steel (244)
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      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS
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      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS
      (244)
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      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS
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      (223)
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      (223)
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      (139)
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Mill 4™ Series

Indexable Inserts • Mill 4-11™
(11 Products)
View Products
SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
6131514 LNGU110404ERGE LNGU431ERGE   KC725M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.4000 .0540 0.4000 .0160 0.0800 .0030 4
    6131516 LNGU110404ERGE LNGU431ERGE   KCPM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.4000 .0540 0.4000 .0160 0.0800 .0030 4
      6131541 LNGU110408ERGE LNGU432ERGE   KC725M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.0800 .0030 4
        6131543 LNGU110408ERGE LNGU432ERGE   KCPM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.0800 .0030 4
          6131542 LNGU110408ERGE LNGU432ERGE   KC522M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.0800 .0030 4
            6201354 LNGU110408ERGE LNGU432ERGE   KCSM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.0800 .0030 4
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              Mill 4™ Series

              Indexable Inserts • Mill 4-11™
              (2 Products)
              View Products
              SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
              6201292 LNGU110404ERLEJ LNGU431ERLEJ   KC422M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.4000 .0540 0.4000 .0160 0.0400 .0016 4
                6131556 LNGU110408ERLEJ LNGU432ERLEJ   KC422M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.0400 .0016 4
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                  View Products
                  SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                  6201280 LNGU110404SRGE LNGU431SRGE   KCPM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.4000 .0540 0.4000 .0160 0.1000 .0040 4
                    6201291 LNGU110404SRGE LNGU431SRGE   KCSM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.4000 .0540 0.4000 .0160 0.1000 .0040 4
                      6132024 LNGU110408SRGE LNGU432SRGE   KC725M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.1000 .0039 4
                        6132022 LNGU110408SRGE LNGU432SRGE   KC522M 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.1000 .0039 4
                          6132023 LNGU110408SRGE LNGU432SRGE   KCPM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.1000 .0039 4
                            6132026 LNGU110408SRGE LNGU432SRGE   KCK15 12.1640 .4790 4.8300 .1900 6.6000 .2598 1.0000 .0390 0.8000 .0310 0.1000 .0039 4
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                              Mill 4™ Series

                              Indexable Inserts • Mill 4-11
                              (13 Products)
                              View Products
                              SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                              6131606 LNGU110408SRGEM LNGU432SRGEM   KCPM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 0.9000 .0360 0.8000 .0310 0.1000 .0039 4
                                6131604 LNGU110408SRGEM LNGU432SRGEM   KC520M 12.1640 .4790 4.8300 .1900 6.6000 .2598 0.9000 .0360 0.8000 .0310 0.1000 .0039 4
                                  6131605 LNGU110408SRGEM LNGU432SRGEM   KC522M 12.1640 .4790 4.8300 .1900 6.6000 .2598 0.9000 .0360 0.8000 .0310 0.1000 .0039 4
                                    6131602 LNGU110408SRGEM LNGU432SRGEM   KCK15 12.1640 .4790 4.8300 .1900 6.6000 .2598 0.9000 .0360 0.8000 .0310 0.1000 .0039 4
                                      6131603 LNGU110408SRGEM LNGU432SRGEM   KCPK30 12.1640 .4790 4.8300 .1900 6.6000 .2598 0.9000 .0360 0.8000 .0310 0.1000 .0039 4
                                        6131426 LNGU110412SRGEM LNGU433SRGEM   KCPM40 12.1640 .4790 4.8300 .1900 6.6000 .2598 0.6000 .0220 1.2000 .0470 0.1000 .0039 4
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                                          SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                                          5588515 LNGU15T604ERGE LNGU541ERGE   KCPM40 17.0100 .6700 6.9600 .2740 10.0000 .3940 2.2000 .0870 0.4000 .0160 0.0800 .0030 4
                                            5588513 LNGU15T604ERGE LNGU541ERGE   KC725M 17.0100 .6700 6.9600 .2740 10.0000 .3940 2.2000 .0870 0.4000 .0160 0.0800 .0030 4
                                              5588388 LNGU15T608ERGE LNGU542ERGE   KC522M 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.8000 .0720 0.8000 .0310 0.0800 .0030 4
                                                5588387 LNGU15T608ERGE LNGU542ERGE   KCPM40 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.8000 .0720 0.8000 .0310 0.0800 .0030 4
                                                  5588385 LNGU15T608ERGE LNGU542ERGE   KC725M 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.8000 .0720 0.8000 .0310 0.0800 .0030 4
                                                    6165422 LNGU15T608ERGE LNGU542ERGE   KCSM40 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.8000 .0720 0.8000 .0310 0.0800 .0030 4
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                                                      View Products
                                                      SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                                                      6001231 LNGU15T604ERGEJ LNGU541ERGEJ   KC422M 17.0000 .6700 6.9600 .2740 10.0000 .3940 2.2000 .0870 0.4000 .0160 0.0300 .0012 4
                                                        6001232 LNGU15T608ERGEJ LNGU542ERGEJ   KC422M 17.0000 .6700 6.9600 .2740 10.0000 .3940 1.8000 .0720 0.8000 .0310 0.0300 .0012 4
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                                                          SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                                                          5516075 LNGU15T604SRGE LNGU541SRGE   KC725M 17.0040 .6690 6.9600 .2740 10.0000 .3937 2.2000 .0860 0.4000 .0157 0.1000 .0039 4
                                                            5516073 LNGU15T604SRGE LNGU541SRGE   KC520M 17.0040 .6690 6.9600 .2740 10.0000 .3937 2.2000 .0860 0.4000 .0157 0.1000 .0039 4
                                                              5515892 LNGU15T608SRGE LNGU542SRGE   KCK15 17.0100 .6700 6.9600 .2740 10.0000 .3937 1.8000 .0710 0.8000 .0313 0.1000 .0039 4
                                                                5515759 LNGU15T608SRGE LNGU542SRGE   KC520M 17.0100 .6700 6.9600 .2740 10.0000 .3937 1.8000 .0710 0.8000 .0313 0.1000 .0039 4
                                                                  5515890 LNGU15T608SRGE LNGU542SRGE   KC522M 17.0100 .6700 6.9600 .2740 10.0000 .3937 1.8000 .0710 0.8000 .0313 0.1000 .0039 4
                                                                    5515891 LNGU15T608SRGE LNGU542SRGE   KC725M 17.0100 .6700 6.9600 .2740 10.0000 .3937 1.8000 .0710 0.8000 .0313 0.1000 .0039 4
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                                                                      SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                                                                      6044824 LNGU15T608SRGEH LNGU542SRGEH   KCSM40 17.0100 .6700 6.9600 .2740 10.0000 .3937 1.8000 .0711 0.8000 .0310 0.1000 .0039 4
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                                                                        Mill 4™ Series

                                                                        Indexable Inserts • Mill 4-15™
                                                                        (17 Products)
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                                                                        SAP Material Number ISO Catalog Number ANSI Catalog Number First Choice Grade [LI] Insert Length [LI] Insert Length [S] Insert Thickness [S] Insert Thickness [W] Insert Width [W] Insert Width [BS] Corner Facet Length [BS] Corner Facet Length [Rε] Corner Radius [Rε] Corner Radius Average Chip Thickness [HM] Average Chip Thickness [HM] Cutting Edges per Insert
                                                                        5575829 LNGU15T608SRGEM LNGU542SRGEM   KCPK30 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.7000 .0670 0.8000 .0310 0.1000 .0040 4
                                                                          5976170 LNGU15T608SRGEM LNGU542SRGEM   KCPM40 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.7000 .0670 0.8000 .0310 0.1000 .0040 4
                                                                            5575828 LNGU15T608SRGEM LNGU542SRGEM   KCK15 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.7000 .0670 0.8000 .0310 0.1000 .0040 4
                                                                              5575827 LNGU15T608SRGEM LNGU542SRGEM   KC520M 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.7000 .0670 0.8000 .0310 0.1000 .0040 4
                                                                                5947280 LNGU15T612SRGEM LNGU543SRGEM   KC520M 17.0100 .6700 6.9600 .2740 10.0000 .3940 1.3000 .0530 1.2000 .0470 0.1000 .0039 4
                                                                                  5976671 LNGU15T612SRGEM LNGU543SRGEM   KCPM40 17.0100